This really isn't a promo asylum for personal IJs or asylums.
However, if you want to set up a friending meme for fans of Harry/MWPP and mention your asylum in the post, that would be totally kosher. (Just read the rules in the asylum info before you do...)
If you're solely interested in promoting your asylum, try asylum_promo or promote. Also, if you want to get the word out about your asylum, though not necessarily promoting it, you can get it listed in the hp_index.